Free Networking Downloads
Three printable study aids, free with no signup: the subnetting cheat sheet, the TCP/UDP port reference, and the CCNA 200-301 study checklist — the same sheets our classroom students use.
The downloads
Subnetting Cheat Sheet
Every CIDR prefix with mask, wildcard, block size and hosts — plus the 4-step block-size method and the formulas. One A4 page for your desk.
Download PDF (127 KB)TCP/UDP Port Reference
The 36 ports every network and security engineer must know cold, with the security note that matters for each.
Download PDF (133 KB)CCNA 200-301 Study Checklist
All six official exam domains broken into tickable topics — print it and work top to bottom.
Download PDF (85 KB)How to use them
- Print the cheat sheet and keep it beside you while doing practice questions — then wean off it before exam day.
- Use the checklist to plan revision: tick a topic only after you can explain it and configure it in a lab.
- Drill the ports until instant recall — they appear across CCNA, CyberOps and every interview.
Want the concepts behind the sheets? Start with the Complete Subnetting Guide.
Frequently asked questions
Are these downloads really free?
Yes — no signup required. They are study aids from our CCNA/CCNP/CyberOps classroom in Ahmedabad. If they help, share them with your study group.
Can I print and share them?
Yes. Print them, share them with classmates, use them in study groups — just keep the attribution footer intact.
Will more downloads be added?
Yes — command references, lab workbooks and interview packs are planned. Check back or follow our blog feed.
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Want hands-on training?
Learn this on real Cisco lab devices with placement support at Attila Technologies, Ahmedabad.